EP2099585A1 - Device and method for the surface peening of a component of a gas turbine - Google Patents
Device and method for the surface peening of a component of a gas turbineInfo
- Publication number
- EP2099585A1 EP2099585A1 EP07846396A EP07846396A EP2099585A1 EP 2099585 A1 EP2099585 A1 EP 2099585A1 EP 07846396 A EP07846396 A EP 07846396A EP 07846396 A EP07846396 A EP 07846396A EP 2099585 A1 EP2099585 A1 EP 2099585A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- component
- blasting
- sub
- blisk
- adjacent sub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 16
- 238000005422 blasting Methods 0.000 claims abstract description 68
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000005480 shot peening Methods 0.000 claims abstract description 5
- 238000005192 partition Methods 0.000 claims description 18
- 238000007711 solidification Methods 0.000 description 5
- 230000008023 solidification Effects 0.000 description 5
- 231100000241 scar Toxicity 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/005—Vibratory devices, e.g. for generating abrasive blasts by ultrasonic vibrations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/286—Particular treatment of blades, e.g. to increase durability or resistance against corrosion or erosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/34—Rotor-blade aggregates of unitary construction, e.g. formed of sheet laminae
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/47—Burnishing
- Y10T29/479—Burnishing by shot peening or blasting
Definitions
- the invention relates to a device and a method for surface blasting, in particular for ultrasonic shot peening, a component of a gas turbine of the type specified in the preambles of claims 1 and 12 respectively.
- Such a device and such a method can already be seen from EP 1 101 568 B1 as known, wherein the rotor blades of a rotor designed as a blisk can be shot-blasted to improve the fatigue strength.
- the device comprises a holding device, with which the rotor is rotatably mounted about its axis of rotation. By rotating the rotor, its rotor blades are guided through a blasting chamber, on the underside of which a vibration device in the form of an ultrasound sonotrode with an at least approximately horizontally extending surface which acts on or accelerates the blasting material is arranged.
- the blasting chamber is thereby bounded both axially - ie in the region of the broad sides of the rotor - as well as radially - ie in the region of the rotor blades - the blisk by corresponding chamber walls. Since, in particular, the chamber walls of the blasting chamber, which are arranged radially to the rotor, are unable to hold all the balls within the central blasting chamber, depending on the position of the respective rotor blades, they are each preceded or arranged in the radial direction of the rotor by two further chambers. Within these further chambers, balls passing over from the central beam chamber equipped with the sonotrode are collected and returned via corresponding channels.
- a problem with this device or with this method is the fact that components with complex geometry can hardly be uniformly consolidated. This applies in particular to surface areas of the component which are not are arranged parallel to the vibrating surface of the vibration device or are moved in such a position.
- the object of the present invention is therefore to provide an apparatus and a method of the aforementioned ax, with which the surface region of the component to be machined can be blasted or solidified extremely uniformly.
- the surface of the vibration device divided into at least two adjacent sub-surfaces, each comprising an overlap part, by means of which a part of the machined Surface region of the component can be processed both by acted upon by one and the other sub-surface blasting.
- the method according to the invention it is provided in this case to process the corresponding part of the surface area of the component to be machined one behind the other by blasting material acted on by the respective overlapping parts.
- the invention is initially provided, instead of providing one oscillating surface, at least two adjacent oscillating sub-surfaces, by means of which it is possible to make a more individual adaptation to the respective surface sub-regions of the component.
- Such an adaptation can be, for example, that the two surfaces are arranged at different angles or act on a different or a different amount of blasting material.
- individual partial areas of the entire surface area of the component to be radiated can be blasted more individually in order to achieve a desired and as homogeneous as possible solidification.
- each of the sub-surfaces has an overlap part with which respective blasting material can be accelerated in the direction of this part of the surface area to be processed.
- it is achieved by the two overlapping parts that even in the intermediate space between the two sub-surfaces a homogeneous and good consolidation of the part of the machinable surface area of the component lying at this point is possible.
- the two adjacent sub-surfaces may lie in a common plane. This is possible in particular if the surface area of the component to be radiated has a lower complexity. If the two sub-surfaces lie in a common plane, then it is also conceivable that these are assigned to a common vibration device.
- a surface area of the component is to be blasted of greater complexity, it has proved to be particularly advantageous in a further embodiment of the invention if the two sub-surfaces are arranged at an angle to one another, so that the two sub-surfaces are optimally aligned with the respective part to be radiated can be adapted to be processed surface area.
- the two adjacent sub-surfaces are preferably each assigned a separate blasting chamber, so that a division into at least two sub-chambers, in which there is always a constant amount of blasting material is present and thereby a uniform blasting result can be realized. Moreover, it is then possible to realize a transition-free blasting between the two sub-surfaces, which are acted upon by the different vibration devices. Furthermore, a synchronous double-sided blasting of thin-walled components is possible by the two sub-surfaces arranged within the respective blasting chambers, without it being possible for an uncoated or insufficient blasted area to occur in the boundary region of the two chambers. The synchronous blasting of the thin-walled components in particular ensures that they are not unintentionally deformed.
- the separation between the two sub-surfaces is particularly easily realized by a partition, which may be formed in cross-section, for example, S-shaped.
- a partition which may be formed in cross-section, for example, S-shaped.
- the partition wall it would also be conceivable to form the partition wall as a flat wall, which then however has to run obliquely so that the blasting material acted upon by the two overlapping areas can each come to that part of the surface area of the component to be machined which lies between the two sub-surfaces.
- chamber walls of the blasting chamber are partially formed by slider walls.
- Such slide walls have the particular advantage that they can be moved to the component so after positioning of the component within the device that no blasting material can escape from the blasting chambers.
- the device according to the invention can be used in particular for surface blasting of rotors designed as blisk, since such blisks often have a relatively complex surface geometry. Accordingly, it is possible with the device according to the invention to solidify the complex surface geometry extremely homogeneous.
- the rotor is rotatable about its axis of rotation, as a result of which the part of the surface region of the rotor to be machined is behind it. each can be acted upon by both accelerated by the one and the other part surface blasting material.
- the advantages of the device according to the invention are also to be regarded as advantages of the method according to the invention.
- the at least two sub-surfaces it would also be conceivable, in particular, for the at least two sub-surfaces to be aligned relative to the surface area of the component or the rotor to be radiated.
- Figure 1 is a schematic perspective view of a designed as a blisk and rotatable about a rotation axis rotor, on whose disk a device for surface blasting is indicated by dashed lines.
- Fig. 2 is a schematic sectional view through the rotor of FIG. 1, whereby the
- FIG. 3 shows a schematic sectional view through the two sub-surfaces of respectively associated vibration devices and through the associated two jet chambers, which are subdivided by an S-shaped partition wall along the line III-III in FIG. 2; 4 shows an alternative embodiment of the device for surface blasting with which the disk region of a blisk comprising several stages can be radiated; and in
- Fig. 5 is a schematic sectional view taken along the line V-V in Fig. 4, wherein three
- Partial surfaces of respective vibration devices are recognizable, which are subdivided by respective S-shaped partitions of respective blasting chambers.
- a rotatable rotor of a gas turbine in the form of a blisk 10 is schematically visible in a schematic perspective view.
- FIG. 2 which shows the blisk 10 in a schematic sectional view, the basic individual regions thereof become more clearly recognizable.
- a blisk disk 12 can be seen, on whose outer peripheral side a multiplicity of rotor blades 14 are arranged.
- a sheet-like shape 16 shown on the outside in line with FIG. 2, can essentially be seen, and a bottom sheet-forming region 18 connects radially inwards or in the drawing downwards.
- the lower sheet-forming region 18 merges radially inwards into a disk neck 20, which connects the lower sheet-forming region to a disk body 22.
- the radially inner end of the disk body 22 is formed by a hub 24, which is a counterweight to the rotor blades 14.
- From the disk body 22 is on the right in the drawing page of the blisk disk 12 from a wing 26 which comprises a web 28 and a substantially U-shaped portion 30.
- the blisk 10 is designed to be rotatable or rotationally symmetrical about a rotation axis R overall.
- a holding device 32 is shown in FIG. 1 by two bearing blocks 34 symbolically indicated, via which the blisk 10 is rotatably supported or mounted about its axis of rotation R.
- a blasting chamber arrangement 36 is indicated by dashed lines in Fig. 1, which in conjunction with Fig. 2 is more apparent.
- the blasting chamber arrangement 36 comprises two methods which are described in more detail below. se separate jet chambers 38, 40, which in the present case in each case one of the blasting material acted upon partial surface 42, 44 of a respective vibration device 46, 48 is assigned.
- the vibration devices 46, 48 are designed as ultrasound sonotrodes with which a blasting material introduced within the respective blasting chamber 38, 40 can be accelerated, for example in the form of spheres. Accordingly, in the present case, a radially inner surface region of the blisk disc 12 can be shot-blasted, which extends - as viewed in FIG. 2 - from the left side of the disc body 22 to the U-shaped region 30 of the wing 26. This surface area can be machined or solidified around the blisk disk 12 by rotating the blisk 10 mounted on the holding device 32 about its axis of rotation R. As a result, the blisk 10 is positioned or positioned relative to the oscillating sub-surfaces 42, 44 of the respective vibration device 46, 48 by means of the holding device 32.
- each outer side radial chamber walls 50, 52 and a further explained in more detail central partition 54 can be seen.
- central partition 54 At the radial end faces 56 of the jet chambers 38, 40 chamber walls are also provided.
- the chamber walls 50, 52 can be designed to be flexible or provided with seals, not shown, so that no blasting material between these and the blisk disk 12 can escape. However, at least the chamber walls 50, 52 are brought so close to the blisk disk 12, that at most results in a gap which is significantly smaller than the diameter of the blasting material used.
- the two cover the entire oscillating or the respective blasting material acting surface forming sub-surfaces 42, 44 each include an overlap portion 58, 60, which is divided in the region of the partition 54.
- a part 64 represented by the two dashed lines 62-in the present case the end face of the hub 24-of the surface area of the blisk disk 12 both above the one as well as the other overlap part 58, 60 is arranged when the blisk 10 is rotated in accordance with its axis of rotation R.
- the part 64 of the surface area comes within both a blasting chamber 38 and the other blasting chamber 40, in which the associated blasting material is accelerated via the respective sub-surface 42, 44.
- the direction of rotation of the blisk 10 is shown by the arrow 65. Accordingly, the portion 64 of the surface area of the blisk disk 12 first passes through the blasting chamber 38 and then the blasting chamber 40, so that the part 64 is successively acted upon by blasting material accelerated by one and the other sub-surface 42, 44.
- the rotational movement of the component 10 provided here, it would also be conceivable, in particular for non-rotationally symmetrical components, to move it in a linear movement relative to the partial surface 42, 44.
- the arrangement of the two overlapping parts 58 makes it possible, on the one hand, to use separate jet chambers 38, 40, for example to arrange the partial surfaces 42, 44 at an angle to one another or to introduce an adapted quantity of abrasive material or to exert a corresponding jet intensity on the partial surface to be processed.
- the arrangement of two jet chambers 38, 40 such a synchronous machining of components - in the present case, for example, the disk body 22 - possible.
- the partition wall 54 is S-shaped in the present embodiment. However, it would rather also be conceivable to use a flat partition wall 54 which extends obliquely between the two radial end faces 56.
- the chamber walls on the front side 56 partially by sliding - Berency 66, 68 are formed, which are displaceable in the direction of the arrows 67, 69.
- sliding - Berency 66, 68 are formed, which are displaceable in the direction of the arrows 67, 69.
- slide walls 66, 68 could also be used to separate the two jet chambers 38, 40 in the region of the partition wall 54 closely from one another.
- both sub-surfaces 42, 44 lie in a common plane. As a result, it is conceivable to operate both surfaces 42, 44 also by means of a common vibration device 46 or 48.
- FIG. 4 shows a blisk 10 comprising two stages, which consequently comprises two blisk disks 12, to which an arrangement of associated rotary blades 14 which encircles the outer circumference is assigned.
- the blisk 10 terminates on a radially encircling wing 70 and on the other side on a radially encircling flange 72.
- three blasting chambers 74, 76, 78 are provided, each of the blasting chambers 74 , 76, 78 a partial surface 80, 82, 84 having vibration means 86, 88, 90 is provided.
- the partial surface 80 is arranged at an angle or V-shaped relative to the two other partial surfaces 82, 84.
- the two sub-surfaces 82, 84 are arranged in a plane.
- the two outer blast chambers 74, 78 comprise outer chamber walls 92, 94, through which the blast chambers 74, 78 are closed relative to the flange 72 and the wing 70, respectively.
- FIG. 5 which schematically shows the jet chambers 74, 76, 78 or the partial surfaces 80, 82, 84 arranged in this region along the line VV in FIG. 4, it can be seen that the two partition walls 96, 98 are again in the Are formed essentially S-shaped.
- the middle blasting chamber 76 or the middle sub-surface 82 is therefore bounded laterally by both partitions 96, 98.
- the parts 108, 110 are indicated by the lines 112 in Fig. 5 by dashed lines.
- the middle partial surface 82 has two overlapping parts 102, 104, which are arranged with the respective corresponding overlapping parts 100, 106 in the region of the respective part 108, 110 of the blisk disc 12 to be processed.
- individually adjustable conditions prevail within the three jet chambers 74, 76, 78, so that the blisk disk 12 can be surface-blasted extremely in line with needs and in a homogeneous manner.
- the respective partition walls 96, 98 are again S-shaped formed stepped, so that in the course of the rotation of the blisk 10 shown by the arrow 114, the parts 108, 110 of the respective hub 24 both above the respective one and the other overlap part 100, 102, 104, 106 are arranged and accordingly with blasting the different jet chambers 74, 76, 78 are acted upon.
- the portion 108, 110 of the surface area of the blisk disk 12 passes through in the direction of the blisk upon rotation Arrow 114, first, the blasting chamber 82 and then the blasting chamber 80 and 84, so that the respective part 108, 110 in succession is acted upon both by the one and by the other part surface 82 and 80 and 84 accelerated blasting material.
- a plurality of sliding walls 120, 122, 124, 126 are provided, with which the undercut contour of the two disk body 22 and the scar 24 is closed, so that a blasting material from the respective blasting chamber 74, 76, 78 can escape.
- the sliding walls 120, 122, 124, 126 are displaceable along the arrows 127 for this purpose.
- the sub-surfaces 42, 44 and 80, 82, 84 each extend obliquely to a perpendicular to the axis of rotation R. As included within the scope of the invention, however, it is to be considered that the sub-surfaces 42, 44 or 80, 82, 84 are also parallel to Rotation axis R or perpendicular to a vertical axis of rotation R could run.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006058675A DE102006058675A1 (en) | 2006-12-13 | 2006-12-13 | Device and method for surface blasting of a component of a gas turbine |
PCT/DE2007/002198 WO2008071164A1 (en) | 2006-12-13 | 2007-12-05 | Device and method for the surface peening of a component of a gas turbine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2099585A1 true EP2099585A1 (en) | 2009-09-16 |
EP2099585B1 EP2099585B1 (en) | 2011-06-29 |
Family
ID=39232967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07846396A Active EP2099585B1 (en) | 2006-12-13 | 2007-12-05 | Device and method for the surface peening of a component of a gas turbine |
Country Status (6)
Country | Link |
---|---|
US (1) | US8499597B2 (en) |
EP (1) | EP2099585B1 (en) |
AT (1) | ATE514527T1 (en) |
CA (1) | CA2671733C (en) |
DE (1) | DE102006058675A1 (en) |
WO (1) | WO2008071164A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008010847A1 (en) * | 2008-02-25 | 2009-08-27 | Rolls-Royce Deutschland Ltd & Co Kg | Method and apparatus for shot peening of blisk blades |
DE102010001287A1 (en) * | 2010-01-27 | 2011-07-28 | Rolls-Royce Deutschland Ltd & Co KG, 15827 | Method and device for surface hardening of blisk blades |
US10493594B2 (en) | 2016-04-12 | 2019-12-03 | General Electric Company | Apparatus and method for peening of machine components |
US11298799B2 (en) * | 2018-05-03 | 2022-04-12 | General Electric Company | Dual sided shot peening of BLISK airfoils |
CN115351731B (en) * | 2022-10-19 | 2023-02-03 | 成都市鸿侠科技有限责任公司 | Clamping mechanism for special-shaped complex curved surface |
CN116770036A (en) * | 2023-06-21 | 2023-09-19 | 安徽理工大学 | Progressive firing pin type ultrasonic shot blasting surface strengthening equipment |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3482423A (en) * | 1968-02-26 | 1969-12-09 | Metal Improvement Co | Blade peening masking apparatus |
FR2801236B1 (en) * | 1999-11-18 | 2001-12-21 | Snecma | METHOD AND MACHINE FOR ULTRASONIC BLASTING OF WORKPIECES ON A WHEEL |
GB2356588B (en) * | 1999-11-25 | 2003-11-12 | Rolls Royce Plc | Processing tip treatment bars in a gas turbine engine |
FR2814099B1 (en) | 2000-09-21 | 2002-12-20 | Snecma Moteurs | CROSS-SECTIONAL SENSING BY ULTRASSONS OF BLADES ON A ROTOR |
FR2815280B1 (en) | 2000-10-12 | 2003-01-03 | Sonats Soc Des Nouvelles Appli | SHOT BLASTING MACHINE AND METHOD |
US7028378B2 (en) * | 2000-10-12 | 2006-04-18 | Sonats-Societe Des Nouvelles Applications Des Techniques De Surfaces | Method of shot blasting and a machine for implementing such a method |
FR2816537B1 (en) * | 2000-11-16 | 2003-01-17 | Snecma Moteurs | METHOD AND INSTALLATION FOR ULTRASONIC SCRATCHING OF ANNULAR AUB ATTACHES ALVEOLES ON A ROTOR |
FR2816636B1 (en) * | 2000-11-16 | 2003-07-18 | Snecma Moteurs | SHOT BLASTING OF COOLED DAWN TOP |
US20060021410A1 (en) * | 2004-07-30 | 2006-02-02 | Sonats-Societe Des Nouvelles Applications Des Techniques De Surfaces | Shot, devices, and installations for ultrasonic peening, and parts treated thereby |
DE102004037954A1 (en) | 2004-08-05 | 2006-03-16 | Mtu Aero Engines Gmbh | Device for surface blasting of components |
FR2907360B1 (en) * | 2006-10-20 | 2009-05-22 | Sonats Soc Des Nouvelles Appli | METHODS AND INSTALLATIONS OF SCRATCHES. |
-
2006
- 2006-12-13 DE DE102006058675A patent/DE102006058675A1/en not_active Withdrawn
-
2007
- 2007-12-05 EP EP07846396A patent/EP2099585B1/en active Active
- 2007-12-05 US US12/519,029 patent/US8499597B2/en not_active Expired - Fee Related
- 2007-12-05 CA CA2671733A patent/CA2671733C/en not_active Expired - Fee Related
- 2007-12-05 AT AT07846396T patent/ATE514527T1/en active
- 2007-12-05 WO PCT/DE2007/002198 patent/WO2008071164A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2008071164A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2008071164A1 (en) | 2008-06-19 |
US20100043512A1 (en) | 2010-02-25 |
ATE514527T1 (en) | 2011-07-15 |
US8499597B2 (en) | 2013-08-06 |
EP2099585B1 (en) | 2011-06-29 |
DE102006058675A1 (en) | 2008-06-19 |
CA2671733C (en) | 2014-11-25 |
CA2671733A1 (en) | 2008-06-19 |
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